src/photobox_photo.c

   1 #include "photobox_photo.h"
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8
   9 #include <gphoto2/gphoto2.h>
  10 #include <gphoto2/gphoto2-camera.h>
  11
  12 #define perror_inf()    fprintf(stderr, "%s:%d: In function %s:\n", __FILE__,  \
  13     __LINE__, __func__)
  14
  15 static Camera *camera;
  16 static GPContext *context;
  17
  18 int pb_ph_init(void) {
  19     context = gp_context_new();
  20     gp_camera_new(&camera);
  21
  22     int ret = gp_camera_init(camera, context);
  23     if (ret != GP_OK) {
  24         perror_inf();
  25         perror("Failed to initialize camera");
  26         return -1;
  27     }
  28
  29     return 0;
  30 }
  31
  32 int pb_ph_capture(pb_ph_buffer *buf) {
  33     int ret;
  34     CameraFile *file;
  35     CameraFilePath camera_file_path;
  36
  37     ret = gp_camera_capture(camera, GP_CAPTURE_IMAGE, &camera_file_path, context);
  38     if (ret != 0) {
  39         perror_inf();
  40         perror("Failed to capture image");
  41         return -1;
  42     }
  43
  44     ret = gp_file_new(&file);
  45     if (ret != 0) {
  46         perror_inf();
  47         perror("Failed to create new file");
  48         return -1;
  49     }
  50
  51     ret = gp_camera_file_get(camera, camera_file_path.folder, camera_file_path.name, GP_FILE_TYPE_NORMAL,
  52         file, context);
  53     if (ret != 0) {
  54         perror_inf();
  55         perror("Failed to get image");
  56         return -1;
  57     }
  58
  59     ret = gp_camera_file_delete(camera, camera_file_path.folder, camera_file_path.name, context);
  60     if (ret != 0) {
  61         perror_inf();
  62         perror("Failed to delete image from camera");
  63         return -1;
  64     }
  65
  66     gp_file_get_data_and_size(file, (const char **)&buf->base, &buf->size);
  67     if (ret != 0) {
  68         perror_inf();
  69         perror("Failed to get data and size");
  70         return -1;
  71     }
  72
  73     return 0;
  74 }
  75
  76 int pb_ph_capture_file(const char *fn) {
  77     int ret, fd;
  78     CameraFile *file;
  79     CameraFilePath camera_file_path;
  80
  81     ret = gp_camera_capture(camera, GP_CAPTURE_IMAGE, &camera_file_path, context);
  82     if (ret != 0) {
  83         perror_inf();
  84         perror("Failed to capture image");
  85         return -1;
  86     }
  87
  88     fd = open(fn, O_CREAT | O_WRONLY, 0644);
  89     if (fd == -1) {
  90         perror_inf();
  91         perror("Failed to open file");
  92         return -1;
  93     }
  94
  95     ret = gp_file_new_from_fd(&file, fd);
  96     if (ret != 0) {
  97         perror_inf();
  98         perror("Failed to create image file");
  99         return -1;
 100     }
 101
 102     ret = gp_camera_file_get(camera, camera_file_path.folder, camera_file_path.name, GP_FILE_TYPE_NORMAL,
 103         file, context);
 104     if (ret != 0) {
 105         perror_inf();
 106         perror("Failed to get image");
 107         return -1;
 108     }
 109
 110     gp_file_free(file);
 111
 112     ret = gp_camera_file_delete(camera, camera_file_path.folder, camera_file_path.name, context);
 113     if (ret != 0) {
 114         perror_inf();
 115         perror("Failed to delete image from camera");
 116         return -1;
 117     }
 118
 119     // close fd? done in gphoto?
 120     close(fd);
 121
 122     return 0;
 123 }